Oracle Application Server 10g Release 2 (10.1.2)
contains some demonstrations to introduce you to various features. Check the following if you
have problems running a demonstration:

Are the required components installed and configured?

For example, the "Is Web Cache Working?" demonstration will work
only if you have installed and configured the Web Cache component. The list of demonstrations only reflects the components that are installed and configured during the initial installation.

Are the required components running?

Demonstrations work only if their components and OC4J demo instances
are already running. You can use Oracle Enterprise Manager to
check the status of and start up Oracle Application Server components
and OC4J demo instances.

Have you made any post-installation changes?

Demonstrations may not work if you have made post-installation changes to items such as port assignments, hostnames, virtual host settings, and IP addresses.